Or buy a Windows 8 Home (not RT) tablet and run any software you want on it.

But that's just me, I'm kinda fed up with Android... every new version limits what you can do with your device more and more, gets slower, and uses more battery... not to mention Google tracking every bit of your life.

Hi, thanks for your replies.To get a tablet with windows 8 (google or Intel ?) is an other idea i have. Have an idea on wich have the best contrast outdoor, because mine will be used outdoor with the QGC ? On my old HTC smartphone i see nothing outdoor.The tracking done by Google is not my problem. You have a lot of spies with other materials. Today it is not possible to do somethings without cookies !!!Alain

Oh, it's possible to shield yourself from tracking somewhat, but takes some effort! In the end it boils down to how much privacy you're willing to give up for "free" services.

For outdoor the best is a matte (not shiny) screen. Some tablets/laptops are designed for that, but it's rare and they tend to be more expensive. I've found that a high-quality matte screen protector/cover can be a big help. I use Vikuiti (a 3M brand) on mine, but they're somewhat expensive and hard to find... there's probably less expensive options out there. OTOH mine last as long as the device, so it tends to be worth it.

When buying equipment for outdoor use - means in bright sunlight - you should try to get Information on- contrast ratio (should be > 800:1 ideally)- backlight brighness (the higher the better; since tablet's are mobile equipments and need to work from small batteries over a long time those numbers are usually quite small - if published at all) --> 400 to 800cd/m2 - suitable for daylight conditions --> > 800cd/m2 - suitable for sunlight conditions --> you will not see this with consumer grade products- fully optically bonded touch/display solution would be preferred - if possible test it outside to see if there's a AR coating on the cover glass (Looks somewhow blueish when off)